Carbureter.



No. 828,284. PATENTED AUG. 7, 1906. T. H. GLASSGOE.

CARBURBTER.

APPLICATION FILED IEB,2,1906.

3 SHEETS-SHEET 1.

I Q Ewe fiww W2 -double valve according to the invention. Fig. 4 is avertical section of an oil-supply to the invention.

ner a hot-water jacketed carbureted-air-Progas-holder 1".

' die of the valve g, whereby that valve may stoo 00E, a subject of theKing of Great Britain tion.

inafter described, and out in the claims.

pipe '1 through valve m (see Fig. 3) into a block which may be set toand secured in any UNITED STATES PATENT or rron.

; THOMAS HENRYIGLASSCOE, or wAivsrEAn, ENGLAND.

To all iii/tony it may concern.- l I Be it known that I, THOMAS HENRYGLAss and Ireland, residing at Ivydale, Herongate Road, l/Vanstead, inthe county of Essex, England, have invented certain new and usefulImprovements in and Relating to Carbureters, of which the following is aspecifica- The invention consists in the featuresand combination andarrangement oi parts hereparticularly pointed Figure 1 is apart-sectional elevation of a carburetedair-producing plant according tothe invention. Fig. 2 is a plan of the same. Fig. 3- s a diagrammaticalsectional plan of a chamber, and Fig. 5 is a vertical section, throughthe center of a thermostat according In carrying out the invention inone manducing plant is provided having a carbureter ()il from an overanoil-chamber d, (see Fig. 4,) in which is a float e, controlling theoil-inlet valve f. The oil-chamber is connected by cock-controlled pipesg and h, the latter of which serves as a ressure-equalizing pipe. Airfrom ablower 1 actuated by a heat-engine *0, is delivered by pipej andbranch to the carbureter, whence it passes through the absorbent.baffles 1), thereby becoming carbureted, and flows by mixing-box n, towhich fresh air is delivered by a branch p (see Fig. 2 through a similarvalve 0. From the mixing-box the mixture passes through valve qinto-awater-sealed The mixture is supplied tothe services fromithe gas-holderby pipe 8 and outlet t, as required.

The bell is provided with a verticallyguided rod a, which engages withone end 11) of a slotted lever which is secured to the spinbe 0 enedmore or less in any well-underd manner. The other end as of the lever isrovided with a long slot 1 in which one end of a lever-rod 2 ispivotally secured to a desired position in the slot. The lever-rod z ispassed loosely through a hole in theerid of Specification of LettersPatent. Application filed February 2, 1906. Serial Na 299,210- v in thesame proportion as before.

' Patented Aug. '7, 190k.

the spindle of the rich-gas v'alve m. The

movements of the bell thus effect, through the slotted lever and rod,the control of the mixture-valve q and the gas-valve The effectivelength of the lever-rod 2 may be vaied to givethe desired amount ofmovement of the gas-valve m in relation to that of the mixture-valve gfThe pure-air valve 0 is also similarly operated by a rod 2 of adjustableeilective length and a slotted lever w :r, actuated by the movement ofthe gas-bell.

So long as the temperatureremains fairly constant these two valves m ando maintain a practically constant proportion of hydrocarbon to air inthe mixture notwithstanding variations in the demand. The valves m and0, however, operate in dpposite directions to each other, so that when alarge quantity of gas is being consumed the falling of the bell opensthe gas-valve m wider and partially closes the air-valve 0, thusallowing a larger volumetric proportion of as, which, owing to theincrease speed 0 flow and larger volume of air passing through thecarbureter, contains less hydrocarbon per unit volume to mix in themixing-chamber with the air from the auxiliary supply. When theconsumption of gas is decreased, the holder rises 'or expands andoperates the gas and air valves in the opposite direction to that abovestated, so as to admit more air and less gas in the required ratio,whereby the hydrocarbon and air forming the mixture are maintainedSuppose, for exam 1e, that the required roportion of hydrocarbon to airbe one and one-half to ninety-eight and one-half. Should the demand nowincrease to the maximum capacity of the plant, the gas passing throughvalve m becomes weak and only require. a small amount of air to be addedfrom the air-valve 0, a large proportion of the ninety-eight, andone-half per cent. of air required being assed through the carburetorand valve mi nder light load, say, ninety per cent. ofthe air is passed,through the air-valve 0; but under eavy load the conditions would bereversed and, say, ninety per cent. would pass, through the gasvalve m.

In order to maintain the proportion of hydrocarbon to air constant whenthe temperatureof the atmosphere varies considerably or the temperaturein the carbureter changes, I provide either the auxiliary air or the gaspipe with a valve controlled by a thermostat adapted to be actuated bychanges of temperature. The valve may conveniently consist .of a cock2,, (see Fig. 3,) concentrically within the plug of the cock or valve mand having ports adapted to register under normal conditions with theports in the valve m. The thermostat for 0 crating this valve mayconsist of two cham ers 3 and 4, (see Fig. 5,) separated by a partition5, having a communicating passage 6 in its bottom.

10 Mercury is supplied to the chambers, and in the chamber 3- is a float7, which supports a rodS, passing through a tubular opening 9 in thebottom of the chamber and connected to an arm on the spindle of the cock2. In the other chamber 4 is a well-fitting piston 11,

having a screwed spindle 12, by means of which the iston may be moved upand down to adjust t e height of mercur in the chamber 3, as required. Atubu ar portion 13 projects horizontally into the carbureter. As thetemperature of the atmosphere and the temperature within the carburetervaries the volume of mercury varies, and the-floatis raised orloweredaccordingly, thereby controlling the amount of opening of thecock 2 soas to maintain the proportion of hydrocarbon to air in themixture practically constant. Thus if the temperature rise the gas willbe richer, and

,0 the gas-valve must be partiallyclosed; but if thetem erature fall thegas going to the mixing-c amber will be poorer and the gasvalve must beopened more.

In some cases the float of the thermostat 5 may be employed to act as avalve to close more or less the conduit through which the gas or airpasses. This method of control may be used inde endently of theautomatic method of gas an air valve control hereinbeemployed actuatedby variations in the flameof the gas generated by the plant. Thisthermostat may ccnsist of a closed drum or annular chamber 14, Fig. 1-,containing air or other suitable elastic fluid, the chamber beingconnected by a pipe 15 to a cylinder 16, inwhich is a spring pressinagainst the closelyfitting piston 17 or diap a m. The piston or diaphram is connected y a rod 18 to a bell-crank ever 19, adapted to actuate acock similar to. that described with reference to Fig. 3,situatedconcentrically'within the auxiliary air-valve 0.

A burner 20, consuming as generated by the plant, is lighted'below tl ieannular chamber 14, the total heat of this flame, according 65 to theproportion of hydrocarbon it contains,

from the chamber 3- fore described and in conjunctionwith other methodsof controlling the proportion of hy-.

becoming greater or less as the gas generated becomes richer or poorerwithin certain limits. Should the mixture vary and a richer gas begenerated, a larger flame and higher temperature is the result, giving agreater expansion of the medium within the annular chamber, whereby thepiston or diaphragm is forced farther out against the spring, and thecock is slightly turned so as to increase the volume of air passing tothe mixing-cham- 7 5 her, and consequently correct the proportion of airto hydrocarbon in the mixture.

When the correct proportion has been obtained, the spring or a weightforces the piston or dia hragm back to its normal position, and shouldthe temperature become poorer the medium, owing to loss of temperaturein the flame, contracts and the spring or weight forces the piston ordiaphragm lower than its normal, thus operating the cock in the re- 85verse direction. In cases where a heat-engine su plied with gasgenerated by the plant is em oyed for drivin the blowers the aircham ermay be heate by the same flame as is used for the engine.

In small plants for producing carbureted air it is usually unnecessaryto employ a thermostat actuated in accordance with variations in theflame temperature, since the engine when actuated by a flame of the gasgen 9 5 erated by the plant usually itself acts as a governor, its speedincreasing when the gas is too rich, and consequently blowing a largervolume of air of increased pressure through the apparatus, whereby thevalves are 0 erated and the proportion is brought bac t to its normal.In larger plants, however, it is much better to employ valves forcounter acting considerable change of temperature,

and if these valves be not actuated by thermostats, as described, theymay be actuated:

by hand, as required.

The apparatus is provided with an*azir'-re lief valve 21, actuated bythe rise and tall? oithe gas-bell, so that in the event of the demandsuddenly ceasin or becoming much reduced the lift of the ell shall allowan es.- cape of air, and thus prevent excess 0t air.

It will be understood that instead of employing a gas-holder foractuating a valve-or 1 r 5 valves whereby the proportion of hydro.-carbon to air is kept constant anyother suitable means may be employedactuated by fluctuation in the demand for the mixture produced. I

. The hot-water jacket surrounds the carbureter. The jacket is connectedby pi es 31 and 32 with the-tank to the belt. he cylinder-jacket is putin circulationwitlr the tank of the bell by means of the pi c533 and 125 34, the latter pi e being connecte teavalwe- 35, situatedin t e pipe32. This valve iso erated' from the bell-rod 'u b means of t e lever 36in such a manner t at asthe demand for mixture decreases the valveis I 0eeaeea 1 eases more or less and the supply Qfhdt v e ,0 ."zpo'site acii'in taking place when the deman Him-eases,

ter to the jacket is reduced t The mixture-delivering pipe t isconnected by" a small; pipe 37 tothe burner 20, and in "thispipe 3-7 avalve "'38 is rovided. This valve is actuated from a re 39,;attaclied tothe bell, the suppl of mixture to the burner being controlledt erebyin'accordance with to e the mend, as willbe readfly'understood,

Having thus'described my invention, what i as new, and desire to secureby Letters Patent,

i. in combination a pla nt for producin:

carbureted air, a carbureted-air-supply pipe,' a pureeir supply pipe, aplurality of valves 10- eated in bindptphfifl mixing-chamber with whichthe'carbureted-air-supply pipe and the pure -air-supply pipe connect abell a pipe for delivering the mixture from the mixin -chamher to thebell and means connecte to said belt in conj unction withthermostatically-com I trolled means whereby the valves are actuated vto vary in accordance with the demand for mixtrue and changes oftemperature the relative vnlumes of carbureted air and an delivered theun ting-chamber so as to keepthe proportion stan't. v v r vincombinatlon in a plant for PlOdllClIlg pf hydrocarbon in the mixture.conearbiireted air, acarbnreted airsupply pipe, a pure-air-supply pipe,a plurality of. -'valves in each pipe, a m xing-chamber with which bothof said pipes connect, a gas-bell,

pipe leading thereto from the mixing-chambar means connecting one valvein each i e ivi'th'the gas-bell,- a thermostatcon trolled by the changesof temperature, means connecta valve in one of the pipes Withthethermostat, means for producing ages-flame connected with the bell,meansfor controlling the remaining valve in the other pipe from thegas-flame whereby the proportion of hydrocarbon to air in the mixture iskept constant, substantially asdescribed.

'3; In combination in a plant for producing carbureted air, acarbureter, a gas-bell, a

pipe and a vsome of the gas a movable mem .the other of said valves,substantially as and nection between said movable member and pipesdeliver, a p 5b for the purpose described. 60

" 4i. Incombinationin a plant for producing carbureted air, acarbureter, a gas-bell, a mixing-chamber, a carbureted-air pipe from thecarburetor and a pure-air pipe, both pipes delivering into themixing-chamber, a thermostaticall -controlled valve in each pipe andstrict er valve in each pipe controlled by the rise and fall ofthegas-bell, substantially as described. i. o v

5. In combination in a plant for producing carbureted air, a carburetedair Suppl pipe, a pure-air-suppl pipe, a valve in eac pipe, anadditional valve in one of said pipes, a thermostat connected to saidadditional valve and adapted to operate by changes of I atmospherictemperature, a mixing-chamber with which both the carbureted-air pipeand the ure-air-supply pipe connect, a bell a pipe or conveying themixture thereto from the mixing-chamber and means connected to 80 thesaid bell whereby the carburetedair valve and the pure-air valve areactuated to vary with the demand for mixture the relative volumes ofcarbureted air and air delivered to the mixing-chamber, substantially asdescribed. I

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THQl/IAS H NRY GLASS/00E.

' Witnesses:

P. M. DAVIES, a BERTRAM H. Ma'rrHEws.

